> I noticed recently that Microsoft relented and soon starts introducing CoPilot features into old outlook (or 'real' or 'full' outlook as people are calling it at work).

I thought they were done developing the old outlook since they started hacking it instead of doing things properly. For example, in the rounded corner update for the old outlook, they started drawing black squares over message pane during resizing, probably to hide visual defects.

Glad to know there is a chance that they might keep the old outlook around.